Network audio and video transmission and display method and network audio and video transmission and display device

Abstract

The invention provides a network audio and video transmission and display method and a network audio and video transmission and display device. The network audio and video transmission and display method includes acquiring signal sources from an input end, synchronously encrypting and coding the signal sources to obtain audio and video information on desktops of computers and raw information of the desktops, decrypting and decoding the synchronously encrypted and coded audio and video information of the desktops and storing the decrypted and decoded audio and video information of the desktops in caches; performing audio and video restoration on the decrypted and decoded audio and video information in the caches according to the raw information of the desktops and storing the restored audio and video information in the caches; converting the restored audio and video information in the caches into digital audio and video information; outputting the digital audio and video information to a display terminal. The network audio and video transmission and display method and the network audio and video transmission and display device have the advantages of wide signal source range, zero display cards for display terminal equipment, unconstrained transmission distance, high quality of outputted images, low cost and simplicity in use.

Description

technical field [0001] The invention relates to the technical field of network equipment, in particular to a network audio and video transmission and display method and device. Background technique [0002] In the prior art, the transmission of video from one terminal to another is generally realized by the following technologies: [0003] The first way: the remote desktop can display the desktop of computer A to the display terminal (computer) of B through the network. If the A computer desktop is to be displayed on the B display device, the following conditions must be met: [0004] 1), both A and B must be computers (mobile phones or tablets cannot be implemented), [0005] 2), install the same software (such as QQ, remote desktop and other tools), [0006] 3) Computer A and computer B send an application or invitation, and only if either party agrees can the remote desktop display be performed. [0007] 4) For QQ users who need to rely on third-party services, they a...

AI Technical Summary

Problems solved by technology

[0009] 1. Unable to share the desktop with multiple machines,

[0010] 2. The transmission quality is poor and frame loss is serious.

[0011] 3. If the computer software versions of A and B are different, there may be problems such as being unable to connect,

[0013] 5. Unable to choose main desktop display or extended desktop display

[0014] 6. Unable to input and output audio at the same time

Disadvantages: 1. Human-made switching errors are prone to occur, especially when there are many participants. 2. It is difficult to synchronize the audio and video of the matrix, and the sound and image may appear "wrong", that is, misplaced. 3. A third party is required to operate. Increase labor costs. 4. When switching to the speaker channel, everyone can see all the operations on the computer. Whether you want to show others or don’t want to show others, your desktop files can be seen at a glance

If it is in commercial negotiations, it may leak commercial secrets

5. The volume cannot be adjusted by itself, and the volume of the sound is difficult to control

6. All computers must have the same interface of the matrix used, such as the commonly used VGA interface, because the performance of the computer is different, the output resolution will be different, which may cause the image to be unable to be centered and black edges appear, which is embarrassing

7. The display terminal can only display the computer desktop of one participant, and cannot display more than one at the same time

[0020] The wires are easily damaged due to frequent plugging and unplugging, but no third party is required to intervene in the operation. If there are many participants, signal switching is very troublesome

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